FFXV

[Gramul]

Yeah I agree it would be bizarre. But I guess the question is "is there enough new/different content and mechanics to justify calling FFXV"?

I would say no.
Because all that has been done is a continuation and expansion of the original FFXIV world and content. It would be more appropriate to call it XIV-2, but that would require the original XIV to truly exist, and come 2.0, it will not.